发明名称 FLOW ACTUATED VALVE FOR USE IN A WELLBORE
摘要 <p>The present invention generally relates to a flow-actuated valve for use in a wellbore. The invention includes a body having a closing member (127) and a seat (109). The closing member and seat are separable to open and close the valve, thereby allowing the flow of fluid through the valve. The invention further includes a retainer (205) to initially retain the valve in the open position absent a predetermined fluid flow rate in a first direction for a predetermined time period. A biasing member (140) thereafter urges the valve to the closed position, absent another fluid flow rate in the first direction.</p>
申请公布号 WO03048509(A1) 申请公布日期 2003.06.12
申请号 WO2002GB05404 申请日期 2002.11.22
申请人 WEATHERFORD/LAMB, INC.;HARDING, RICHARD, PATRICK;HEBERT, JOHN, EMILE;BOUDREAUX, JOSEPH, JUDE;LAUREL, DAVID, F.;DARBY, SCOTT, A. 发明人 HEBERT, JOHN, EMILE;BOUDREAUX, JOSEPH, JUDE;LAUREL, DAVID, F.;DARBY, SCOTT, A.
分类号 E21B21/10;(IPC1-7):E21B21/10 主分类号 E21B21/10
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